考虑可中断负荷的机组组合优化建模及其应用研究

发布时间：2018-01-14 23:16

本文关键词：考虑可中断负荷的机组组合优化建模及其应用研究　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：机组组合是制定日前调度计划的重要内容,主要是确定机组的有功出力和启停状态。传统的机组组合已经很难满足调度出现的新问题。在智能电网大力建设背景下,需求响应成为重要的互动资源。本文在源荷互动原理的基础上,研究了基于可中断的机组组合优化模型,并将优化模型应用在实际算例中,旨在取得经济、安全、环保等多方效益的最优。具体包括以下几个方面：首先,新能源发电为电网运行带来了挑战,尤其是风电的随机性、间歇性和反调峰特征为调度运行造成的困难。负荷侧资源由于智能电网的建设具备了参与系统运行的硬件基础,极大丰富了可调度资源,调度的对象应从电源侧发展到负荷侧,在此背景下源荷互动调度原理应运而生。其次,分析需求响应不同互动手段的优缺点和适用范围,提出了负荷侧参与系统运行的基本原则,充实了源荷互动的互动机制；为电力公司和用户分别设计了参与活动的具体流程,指出整个流程的重点工作和每个阶段的重点工作内容；比较传统调度模式和源荷互动模式下建立数学模型所需要考虑的因素。再次,选取可中断负荷融入到机组组合中,详细分析可中断负荷项目部署所需考虑的关键因素,包括用户的选择、提前通知时间、中断持续时间、补偿程度等,建立考虑可中断负荷的机组组合优化模型。最后,以一个7机系统并结合某地实际负荷数据,采取分支定界法对数学优化模型进行算例仿真运算,算例结果表明所建模型有效改善了负荷形状,降低了系统运行成本,减少效率差的小型机组的频繁启停,同时用户还获得收益,说明考虑可中断负荷的机组组合优化调度模型有利于电力系统的可靠经济运行。
[Abstract]:Unit combination is an important part of pre-day scheduling plan. It is mainly to determine the active power and start-stop state of the unit. The traditional unit combination has been difficult to meet the new problems of dispatching. In the context of smart grid construction. Demand response has become an important interactive resource. Based on the principle of source-load interaction, this paper studies the optimal model of unit combination based on interruptible, and applies the optimization model to practical examples in order to obtain economy. Safety, environmental protection and other benefits of the best. Specifically including the following aspects: First of all, new energy generation brings challenges to grid operation, especially the randomness of wind power. Intermittent and backpeak-shaving characteristics are the difficulties caused by dispatching operation. Load side resources have the hardware foundation to participate in the system operation because of the construction of smart grid, which greatly enrich the dispatching resources. The object of scheduling should be developed from power side to load side. Under this background, the principle of source-load interaction scheduling emerges as the times require. Secondly, the paper analyzes the advantages and disadvantages of different interactive means of response to demand, and puts forward the basic principles of load side participating in the operation of the system, which enriches the interactive mechanism of source-load interaction. The specific process of participating activities is designed for the power company and the user respectively, and the key work of the whole process and the key work content of each stage are pointed out. The factors that need to be considered in establishing mathematical model under traditional scheduling mode and source-load interaction mode are compared. Thirdly, the interruptible load is selected to be integrated into the unit portfolio, and the key factors that need to be considered in the deployment of interruptible load project are analyzed in detail, including user selection, advance notice time and interruption duration. The optimal model of unit combination considering interruptible load is established. Finally, with a 7-machine system and the actual load data of a certain place, the branch and bound method is used to simulate the mathematical optimization model. The simulation results show that the proposed model can effectively improve the load shape. It reduces the operating cost of the system, reduces the frequent start and stop of small units with low efficiency, and at the same time, the users also get the income. It is shown that the optimal dispatching model of unit combination considering interruptible load is beneficial to the reliable and economical operation of power system.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM73

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